- Spam
- Legit
- Suspicious
- Scam
04 8398 7500 (0483987500): Mixed reports including silent calls that hang up without speaking, plus some legitimate market research activity from Sydney.
Silent Call Reports for 04 8398 7500
04 8398 7500 (also written as 0483987500) has generated six community reports with conflicting patterns. Two contributors reported silent calls from this number where callers answered but disconnected without speaking. One contributor answered a call from 04 8398 7500 and the caller simply hung up immediately. Another similar experience occurred in October 2025, where again the caller from 0483987500 hung up without any conversation.
However, the picture is more complex. Two other contributors identified this mobile number as legitimate market research activity. One caller from 04 8398 7500 was identified as Notting Hill Advisory, a market research organisation based in Sydney. A second contributor also received a local survey call from 0483987500 and had a positive experience. This suggests the number may be used for legitimate purposes alongside the silent call activity.
Mixed Calling Patterns from 04 8398 7500
The reports reveal inconsistent behaviour. The silent calls from 04 8398 7500 occurred on specific dates (October 2025 and January 2026), with callers answering and immediately disconnecting. One contributor received a missed call from this number in April 2025 with no voicemail left, and assumed scam activity. Another report from July 2025 described the caller as either a scammer or dodgy telemarketer, though without further detail.
Notting Hill Advisory's use of 0483987500 for legitimate market research introduces ambiguity. It's possible that the silent calls are unrelated incidents, callback scam attempts, or testing of the number's validity. The Optus mobile allocation shows this is a standard mobile number rather than a business line, which is unusual for an established research firm but not impossible.
What to Do If You Receive a Call from 04 8398 7500
Given the mixed reports about 0483987500, approach incoming calls with caution:
- Do not: Provide personal or financial information to unknown callers from 04 8398 7500
- Do: Let calls go to voicemail if you don't recognise the number
- Do: If they claim to be Notting Hill Advisory or another organisation, hang up and call them back using a verified number from their official website
- Do: Block the number if 04 8398 7500 calls repeatedly without leaving messages
- Consider: Not returning silent calls from 0483987500, as callback scams use this tactic to generate return calls to premium lines
Why Silent Calls Occur
Silent calls from numbers like 04 8398 7500 typically happen for a few reasons. Callback scam operators dial in bulk and hang up when answered to identify active numbers. Some telemarketing operations use automated systems that disconnect if no agent is available. Legitimate organisations occasionally experience system glitches causing silent calls.
The challenge with 0483987500 is distinguishing between these scenarios. The presence of legitimate market research activity makes it less likely to be a pure scam operation, but the silent calls suggest either system issues on their end or callback testing.
How to Report 04 8398 7500
If you receive unwanted calls from 04 8398 7500 or 0483987500:
- Report silent or abusive calls to the Australian Communications and Media Authority (ACMA) at acma.gov.au
- If you suspect a scam, report to Scamwatch at scamwatch.gov.au
- Register your number with the Do Not Call Register at donotcall.gov.au to reduce telemarketing calls generally
- Block the number on your phone to prevent future calls from 0483987500
- Share your experience on Reverseau to help other Australians identify this number
Help others by sharing your experience with 0483 987 500!
WRITE A REVIEWRatings Distribution
What Our Users Reviewed
Answered and they just hung up without saying anything
received call from Notting Hill Advisory, legit market research mob from Sydney
Called about a local survey, was nice to feel useful
Answered but they hung up without a word
Scammers or dodgy telemarketers calling
Rang but did not leave a message, assuming scammer
Help others by sharing your experience with 0483 987 500!
WRITE A REVIEWFrequently Asked Questions
Should I answer calls from 04 8398 7500?
It depends on your comfort level. If you don't recognise the number, it's safer to let it ring through to voicemail. If 0483987500 calls frequently without leaving messages, blocking it is a reasonable precaution. If they claim to be a legitimate organisation like Notting Hill Advisory, hang up and call them back using a number from their official website rather than returning the call to 04 8398 7500.
Why do callers from 04 8398 7500 hang up without speaking?
Silent calls from 0483987500 could indicate callback scam testing (where the operator hangs up to confirm the number is active), a legitimate organisation with system glitches, or an understaffed telemarketing operation. Two contributors reported this exact pattern from 04 8398 7500. Without more information, it's prudent not to return the call.
Is 04 8398 7500 legitimate?
Partially. Two contributors confirmed receiving legitimate market research calls from 0483987500, with one specifically identifying Notting Hill Advisory as the caller. However, the same number has also generated silent call reports, so there's conflicting activity. Verify any claims by calling back using contact details from the organisation's official website, not by returning the call to 04 8398 7500.
What does it mean when a number like 0483987500 calls and hangs up?
This could be a callback scam tactic (testing if the number is active to later call a premium line), a legitimate organisation experiencing technical issues, or an automated dialler. Contributors have reported this exact behaviour from 04 8398 7500. Do not return calls to numbers that hang up on you, as you may be calling a premium line.
How do I block 04 8398 7500 on my phone?
On most Australian mobile phones, open your call history, find 0483987500, and select 'Block' or 'Report Spam'. For iPhones, tap the 'i' icon next to the number and select 'Block this Caller'. For Android, hold the number from your call log and choose 'Block'. You can also contact your provider (Optus, in this case) to request blocking of 04 8398 7500 at the network level.
Should I report 0483987500 to ACMA?
Yes, if you receive repeated silent calls from 04 8398 7500 or suspect callback scam activity. Report to ACMA at acma.gov.au using the 'Report telemarketing or nuisance calls' option. Also report your experience here on Reverseau to help other Australians. Given the mixed reports about 0483987500 (some legitimate, some silent), providing specific details about your experience helps the community understand the number's behaviour.